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CrcCalculatorStream Class

A Stream that calculates a CRC32 (a checksum) on all bytes read, or on all bytes written.
Inheritance Hierarchy

Namespace:  Atalasoft.PdfDoc.MidLevel.Ionic.Crc
Assembly:  Atalasoft.PdfDoc (in Atalasoft.PdfDoc.dll) Version: 11.0.0.0.0.297 (.NET 4.5.2, x86)
Syntax
public class CrcCalculatorStream : Stream, 
	IDisposable

The CrcCalculatorStream type exposes the following members.

Constructors
  NameDescription
Public methodCrcCalculatorStream(Stream)
The default constructor.
Public methodCrcCalculatorStream(Stream, Boolean)
The constructor allows the caller to specify how to handle the underlying stream at close.
Public methodCrcCalculatorStream(Stream, Int64)
A constructor allowing the specification of the length of the stream to read.
Public methodCrcCalculatorStream(Stream, Int64, Boolean)
A constructor allowing the specification of the length of the stream to read, as well as whether to keep the underlying stream open upon Close().
Public methodCrcCalculatorStream(Stream, Int64, Boolean, CRC32)
A constructor allowing the specification of the length of the stream to read, as well as whether to keep the underlying stream open upon Close(), and the CRC32 instance to use.
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Properties
  NameDescription
Public propertyCanRead
Indicates whether the stream supports reading.
(Overrides StreamCanRead.)
Public propertyCanSeek
Indicates whether the stream supports seeking.
(Overrides StreamCanSeek.)
Public propertyCanTimeout
Gets a value that determines whether the current stream can time out.
(Inherited from Stream.)
Public propertyCanWrite
Indicates whether the stream supports writing.
(Overrides StreamCanWrite.)
Public propertyCrc
Provides the current CRC for all blocks slurped in.
Public propertyLeaveOpen
Indicates whether the underlying stream will be left open when the CrcCalculatorStream is Closed.
Public propertyLength
Returns the length of the underlying stream.
(Overrides StreamLength.)
Public propertyPosition
The getter for this property returns the total bytes read. If you use the setter, it will throw NotSupportedException.
(Overrides StreamPosition.)
Public propertyReadTimeout
Gets or sets a value, in miliseconds, that determines how long the stream will attempt to read before timing out.
(Inherited from Stream.)
Public propertyTotalBytesSlurped
Gets the total number of bytes run through the CRC32 calculator.
Public propertyWriteTimeout
Gets or sets a value, in miliseconds, that determines how long the stream will attempt to write before timing out.
(Inherited from Stream.)
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Methods
  NameDescription
Public methodBeginRead (Inherited from Stream.)
Public methodBeginWrite (Inherited from Stream.)
Public methodClose
Closes the stream.
(Overrides StreamClose.)
Public methodCopyTo(Stream)
Reads the bytes from the current stream and writes them to another stream.
(Inherited from Stream.)
Public methodCopyTo(Stream, Int32)
Reads the bytes from the current stream and writes them to another stream, using a specified buffer size.
(Inherited from Stream.)
Public methodCopyToAsync(Stream)
Asynchronously reads the bytes from the current stream and writes them to another stream.
(Inherited from Stream.)
Public methodCopyToAsync(Stream, Int32)
Asynchronously reads the bytes from the current stream and writes them to another stream, using a specified buffer size.
(Inherited from Stream.)
Public methodCopyToAsync(Stream, Int32, CancellationToken)
Asynchronously reads the bytes from the current stream and writes them to another stream, using a specified buffer size and cancellation token.
(Inherited from Stream.)
Public methodCreateObjRef
Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.
(Inherited from MarshalByRefObject.)
Protected methodCreateWaitHandle Obsolete.
Allocates a WaitHandle object.
(Inherited from Stream.)
Public methodDispose
Releases all resources used by the Stream.
(Inherited from Stream.)
Protected methodDispose(Boolean)
Releases the unmanaged resources used by the Stream and optionally releases the managed resources.
(Inherited from Stream.)
Public methodEndRead (Inherited from Stream.)
Public methodEndWrite (Inherited from Stream.)
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodFlush
Flush the stream.
(Overrides StreamFlush.)
Public methodFlushAsync
Asynchronously clears all buffers for this stream and causes any buffered data to be written to the underlying device.
(Inherited from Stream.)
Public methodFlushAsync(CancellationToken)
Asynchronously clears all buffers for this stream, causes any buffered data to be written to the underlying device, and monitors cancellation requests.
(Inherited from Stream.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetLifetimeService
Retrieves the current lifetime service object that controls the lifetime policy for this instance.
(Inherited from MarshalByRefObject.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Public methodInitializeLifetimeService
Obtains a lifetime service object to control the lifetime policy for this instance.
(Inherited from MarshalByRefObject.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Protected methodMemberwiseClone(Boolean)
Creates a shallow copy of the current MarshalByRefObject object.
(Inherited from MarshalByRefObject.)
Protected methodObjectInvariant Obsolete.
Provides support for a Contract.
(Inherited from Stream.)
Public methodRead
Read from the stream
(Overrides StreamRead(Byte, Int32, Int32).)
Public methodReadAsync(Byte, Int32, Int32)
Asynchronously reads a sequence of bytes from the current stream and advances the position within the stream by the number of bytes read.
(Inherited from Stream.)
Public methodReadAsync(Byte, Int32, Int32, CancellationToken)
Asynchronously reads a sequence of bytes from the current stream, advances the position within the stream by the number of bytes read, and monitors cancellation requests.
(Inherited from Stream.)
Public methodReadByte
Reads a byte from the stream and advances the position within the stream by one byte, or returns -1 if at the end of the stream.
(Inherited from Stream.)
Public methodSeek
Seeking is not supported on this stream. This method always throws NotSupportedException
(Overrides StreamSeek(Int64, SeekOrigin).)
Public methodSetLength
This method always throws NotSupportedException
(Overrides StreamSetLength(Int64).)
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
Public methodWrite
Write to the stream.
(Overrides StreamWrite(Byte, Int32, Int32).)
Public methodWriteAsync(Byte, Int32, Int32)
Asynchronously writes a sequence of bytes to the current stream and advances the current position within this stream by the number of bytes written.
(Inherited from Stream.)
Public methodWriteAsync(Byte, Int32, Int32, CancellationToken)
Asynchronously writes a sequence of bytes to the current stream, advances the current position within this stream by the number of bytes written, and monitors cancellation requests.
(Inherited from Stream.)
Public methodWriteByte
Writes a byte to the current position in the stream and advances the position within the stream by one byte.
(Inherited from Stream.)
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Remarks

This class can be used to verify the CRC of a ZipEntry when reading from a stream, or to calculate a CRC when writing to a stream. The stream should be used to either read, or write, but not both. If you intermix reads and writes, the results are not defined.

This class is intended primarily for use internally by the DotNetZip library.

See Also